During that Friday’s practice, Lorenzo wasn’t yet 15, the FIM legal age to participate in the former 125cc class. But on that Saturday, Lorenzo turned 15, and was able to participate in his first-ever World Championship practice session.Lorenzo went on to win at his home circuit in Spain in 2006 and 2007 in the former 250cc class, and still holds the fastest lap and best pole at Jerez, both from his debut year in MotoGP in 2008.And for 2013, Lorenzo will celebrate yet another birthday at Jerez, this time the Yamaha Factory Racing YZR-M1 rider will turn 26 Saturday.But this time there is more to celebrate, considering Lorenzo is a two-time MotoGP Champion, and also tied in points with fellow countryman Marc Marquez (Repsol Honda) after two of 18 rounds.Many celebrations occurred at Jerez, which will be the first of four Spanish rounds in 2013 MotoGP, the most of any country. The city gave Lorenzo a tribute Thursday, which is highlighted in the above video.Jorge Lorenzo (Yamaha Factory Racing YZR-M1 MotoGP) says: “I feel very happy. It is an incredible moment in my career and the best gift I could get for my birthday. Saturday will be a very special day for me and I am extremely grateful to the Mayor of Jerez, to the City Council and the Jerez Circuit for this unforgettable gift.“This is one of the biggest and more important presents I have received in my all life. Having one corner entitled to my name at such a special track like Jerez is amazing.“Jerez was the first “pro” track were I rode at the age of 10. I also made my debut here in 125cc, eleven years ago. Jerez will always represent something special for me. The first lap I will make tomorrow with my M1 is going to be terrific. I guess I can’t avoid to think of it tomorrow, when I enter that corner, but I also hope to forget it quickly, because I need to be concentrated! I really hope the grandstands will be packed this weekend!”For a preview of Jerez MotoGP, click here.